This video is show how to login into single user mode and reset root password in RHEL7. A step by step procedure for beginner to "how to login to single user mode and reset password in rhel7"
Why need to use in init=/bin/bash ?, second question : I saw different method for root password reset : rd.break console=tty in linux16 line and after that control X and change like mount -o remount,rw /sysroot; chown /sysroot;passwd root;touch /.autorelabel ; exit; exit, why this much need to do in RHEL 7 ?
When you change root password the shadow file is modified with incorrect SElinux context. Either create a hidden file under root directory #touch /.autorelabel , on the next boot it will create a correct context . Note booting may take time if size of the disk is huge. Other way around you can break the booting process, also assign enforcing=0 which makes SElinux temperory permissive so later you can restore the correct context on /etc/shadow and put back SElinux in enforcing mode.
From 4:00 to 4:35, you have run init command to reboot the system, can't we run "reboot" command itself to reboot the system? Hope you answer it. Thank you for the video.
